technology

Questions and Answers

How can balloons hang for two days? What is needed for this?

Questions and Answers

Do some emergency aircraft have a kind of “mini-helicopter screw” that allows them to hover and continue their flight?

Questions and Answers

How can you vacuum pack something?

Questions and Answers

Which floor insulates sound best?

Questions and Answers

What happens to a fan if I turn it on in an airless room. Does it work, what does it move, or does...

Questions and Answers

Why do sunglasses have dark lenses?

Questions and Answers

How is the energy of wind turbines stored and how are differences in wind strength compensated for?

Questions and Answers

Why does the radiator get hot when you turn it on?